Cita APA (7th ed.)

Wirt, J. G., Lieberman, A. J., & Levien, R. E. (1975). R & D management: Methods used by federal agencies. Lexington Books.

Cita Chicago (17th ed.)

Wirt, John G., Arnold J. Lieberman, i Roger Eli Levien. R & D Management: Methods Used by Federal Agencies. Lexington, Mass: Lexington Books, 1975.

Cita MLA (9th ed.)

Wirt, John G., et al. R & D Management: Methods Used by Federal Agencies. Lexington Books, 1975.